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<title>opencv: GStreamer Bad Plugins 1.0 Plugins Reference Manual</title>
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<a name="gst-plugins-bad-plugins-plugin-opencv"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle">opencv</span></h2>
<p>opencv — <a name="plugin-opencv"></a>GStreamer OpenCV Plugins</p>
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<a name="id-1.3.80.3"></a><h2>Plugin Information</h2>
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<td><p><span class="term">filename</span></p></td>
<td>libgstopencv.so</td>
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<td><p><span class="term">version</span></p></td>
<td>1.16.2</td>
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<td><p><span class="term">run-time license</span></p></td>
<td>LGPL</td>
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<td><p><span class="term">package</span></p></td>
<td>GStreamer Bad Plug-ins source release</td>
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<td><p><span class="term">origin</span></p></td>
<td>Unknown package origin</td>
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<a name="id-1.3.80.4"></a><h2>Elements</h2>
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<td><p><span class="term">cameracalibrate</span></p></td>
<td>Performs camera calibration</td>
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<td><p><span class="term">cameraundistort</span></p></td>
<td>Performs camera undistort</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-cvdilate.html" title="cvdilate">cvdilate</a></span></p></td>
<td>Applies cvDilate OpenCV function to the image</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-cvequalizehist.html" title="cvequalizehist">cvequalizehist</a></span></p></td>
<td>Applies cvEqualizeHist OpenCV function to the image</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-cverode.html" title="cverode">cverode</a></span></p></td>
<td>Applies cvErode OpenCV function to the image</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-cvlaplace.html" title="cvlaplace">cvlaplace</a></span></p></td>
<td>Applies cvLaplace OpenCV function to the image</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-cvsmooth.html" title="cvsmooth">cvsmooth</a></span></p></td>
<td>Applies cvSmooth OpenCV function to the image</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-cvsobel.html" title="cvsobel">cvsobel</a></span></p></td>
<td>Applies cvSobel OpenCV function to the image</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-dewarp.html" title="dewarp">dewarp</a></span></p></td>
<td>Dewarp fisheye images</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-disparity.html" title="disparity">disparity</a></span></p></td>
<td>Calculates the stereo disparity map from two (sequences of) rectified and aligned stereo images</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-edgedetect.html" title="edgedetect">edgedetect</a></span></p></td>
<td>Performs canny edge detection on videos and images.</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-faceblur.html" title="faceblur">faceblur</a></span></p></td>
<td>Blurs faces in images and videos</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-facedetect.html" title="facedetect">facedetect</a></span></p></td>
<td>Performs face detection on videos and images, providing detected positions via bus messages</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-grabcut.html" title="grabcut">grabcut</a></span></p></td>
<td>Runs Grabcut algorithm on input alpha. Values: BG=0, FG=1, PR_BG=2, PR_FGD=3; NOTE: larger values of alpha (notably 255) are interpreted as PR_FGD too. 
IN CASE OF no alpha mask input (all 0's or all 1's), the 'face' downstream event is used to create a bbox of PR_FG elements.
IF nothing is present, then nothing is done.</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-handdetect.html" title="handdetect">handdetect</a></span></p></td>
<td>Performs hand gesture detection on videos, providing detected hand positions via bus message and navigation event, and deals with hand gesture events</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-motioncells.html" title="motioncells">motioncells</a></span></p></td>
<td>Performs motion detection on videos and images, providing detected motion cells index via bus messages</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-opencvtextoverlay.html" title="opencvtextoverlay">opencvtextoverlay</a></span></p></td>
<td>Write text on the top of video</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-retinex.html" title="retinex">retinex</a></span></p></td>
<td>Multiscale retinex for colour image enhancement</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-segmentation.html" title="segmentation">segmentation</a></span></p></td>
<td>Create a Foregound/Background mask applying a particular algorithm</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-skindetect.html" title="skindetect">skindetect</a></span></p></td>
<td>Performs non-parametric skin detection on input</td>
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<td><p><span class="term"><a class="link" href="gst-plugins-bad-plugins-templatematch.html" title="templatematch">templatematch</a></span></p></td>
<td>Performs template matching on videos and images, providing detected positions via bus messages.</td>
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